ASPHALT PAVEMENT DESIGN: HIGHWAY VERSUS RAILROAD

In the summer of 1981, two 500-ft long sections of asphalt pavements, one 8 in. and the other 12 in. thick, were used in the trackbed reconstruction of a portion of the Louisville and Nashville (Seaboard System) Railroads' main line at their East-Central Kentucky Ravenna Yard. To analyze the stresses and strains in the track system, a finite element computer program called KENTRACK was developed. Due to the difference in loading conditions, the computer analysis indicated that the stresses and strains in railroad pavements were quite different from those in highway pavements. This paper compares these two types of pavements and shows that some of the design concepts generally accepted for highway pavements may not be applicable to railroad pavements. As more asphalt pavements are expected to be used in railroads, due to their greater load-carrying capacity, water-proofing ability, and smoother rideability, the conclusions drawn from this study may be quite significant in forming new concepts for the design of railroad pavements.

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  • Accession Number: 00387407
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Sep 28 1984 12:00AM